I have a feeling that hog would have given that bear all he wanted on level ground, and if he hadn't been hit by a car first. When this video first made the rounds there was a comment on it from someone, who claimed to be there, that said the hog had been hit by a car and wandered, disoriented, into a bunch of cars pulled over watching the bear, and then freaked out and tried to run for daylight, which led to the showdown.
That hog had to be sick.
I don't see a black bear slipping up on a healthy hog.
They can smell a bear as good as a bear can smell them. Anything that kills a feral animal in the wild has my vote.